Fence comprising fence modules

ABSTRACT

Fence comprising at least a first and a second fence module ( 1 ), wherein said fence modules ( 1 ) comprise a base ( 2 ) with a receptacle for a substance, wherein the first fence module ( 1 ) comprises a first connecting element ( 3   a ) with an upright passage ( 4   a ), the second fence module ( 1 ) comprises a second connecting element ( 3   b ) with an upright passage ( 4   b ), and the fence comprises a connecting rod ( 5 ) for extending through both said passages ( 4   a   , 4   b ) to connect the fence modules ( 1 ) to each other, and in that in a connected state of the fence modules ( 1 ), these fence modules ( 1 ) can occupy at least two positions with regard to each other, being a first position where the distance between the said passages ( 4   a   , 4   b ) along the connecting rod ( 5 ) is minimal and a second position where the distance between the said passages ( 4   a   , 4   b ) along the connecting rod ( 5 ) is maximal.

The present invention relates to a fence comprising at least a first anda second fence module which are consecutive connectable to each other,wherein said fence modules comprise a base with a receptacle for asubstance such as concrete, gravel, water or sand.

Such a fence preferably comprises several such fence modules which aresuccessively connected to each other, such that the fence has a certainlength.

At sites where many people gather together, such as sites where sportingevents, rock concerts, markets, festivals, etc., take place, it isdesirable to have suitable safety measures in place in order toguarantee the safety of these people. These safety measures includebarrier systems, such as fences, to prevent people and/or vehicles toenter these sites. These fences need to be solid and strong in order toeffectively stop potential intruders. They also need to be able toabsorb impacts from vehicles such as cars, trucks etc. becauseterrorists can attempt to enter the site with a moving vehicle.Therefore, the fence modules comprise a base with a receptacle for asubstance such as concrete, gravel, water or sand. The weight of thebase increases the weight of the fence module, thus preventing peopleand or vehicles to tip over the fence modules and/or preventing thedisplacement of the fence modules single handed once the fence isplaced. In most cases the fence module will also comprise a panel orsomething similar such as a ballistic panel according to the standardUL752/NIJ0101.06 or a panel made of polycarbonate. The base then alsosupports this panel. However, the fence modules do not have to comprisea panel because the base can also be used as such. These fences can beused for temporary, semi-permanent or permanent access protection ofsites. Preferably these fences are crash rated and tested according tostandards such as IWA14, ASTM F2656 and/or PAS 68.

Since these events are usually temporary events, these fences are oftentemporary fences which makes it desirable that these fences can beplaced rapidly and in a simple manner. By using fence modules, one canplace the fence modules for example one by one and next to each otherand then connect these fence modules to each other as such to form afence of the desired length. These fence modules can be for example ofsuch a shape that they can easily be picked up and placed at the desiredlocation by a forklift.

At many sites the surface is not flat. For example there can beirregularities such as curbstones, tree rotes, slopes, (speed) bumps,holes, etc. With existing fence modules, these irregularities obstructthe good connection of the fence modules to each other, meaning that thestrength of the fence at the height of said irregularities is smallerand/or meaning that measurements have to be taken to circumvent theseirregularities and for example more fence modules are needed because thefence has to go around these irregularities.

It is therefore an object of the invention to provide a strong andeffective fence that can be rapidly placed in a simple manner at thedesired site and which can be placed upon a surface with irregularitiesin a simple and effective manner.

This object is achieved by providing a fence comprising at least a firstand a second fence module which are consecutive connectable to eachother, wherein said fence modules comprise a base with a receptacle fora substance such as concrete, gravel, water or sand, wherein the firstfence module comprises a first connecting element with an uprightpassage, the second fence module comprises a second connecting elementwith an upright passage, and the fence comprises a connecting rod forextending through both said passages to connect the fence modules toeach other, and wherein in a connected state of the fence modules, thesefence modules can occupy at least two positions with regard to eachother, being a first position where the distance between the saidpassages along the connecting rod is minimal and a second position wherethe distance between the said passages along the connecting rod ismaximal.

With a connected state, a state is meant where the fence modules areconnected to each other with the aid of the connecting rod. This rod isthen placed through both the passages of the fence modules, andpreferably throughout the entire length of both said passages such as toensure a strong connection between said fence modules, wherein saidconnection is able to withstand impacts from vehicles.

These fence modules can occupy at least two positions with regard toeach other in a connected state, meaning that when one fence module islocated higher than the other fence module lying next to it, and this asa result of irregularities such as holes, curbstones, tree rotes, bumps,etc., these fence modules can still be connected to each other in a goodmanner. These differences of height of the surface caused byirregularities do not prevent fence modules to be connected to eachother, such that these fences can be placed at the most suitablelocation even if the surface at this location is not completely flat.Preferably the receptacle is filled with concrete and even morepreferably the receptacle is already filled with concrete before thefence modules are placed to form the fence.

With the distance between the passages viewed along the connecting rod,the minimal distance between said passages, viewed along said connectingrod, is indicated. Preferably the cross section of the connecting rod issomewhat smaller than the corresponding dimensions of said passages,such that the connecting rod can be easily placed into the saidpassages, but still can provide sufficient strength to the connection.

Preferably the base of each fence module comprises the respectiveconnecting element. The connection of the fence modules then takes placeat the height of the base, thus relatively low, meaning that slopesand/or angles between the surfaces of the bases of two consecutive fencemodules, which are placed upon the ground, do not prevent a goodconnection of the fence modules. These slopes and/or angles are causedby placing the bases upon a surface with irregularities. The crosssection of the connecting rod is preferably somewhat smaller than thecorresponding dimensions of said passages, such that these slopes and/orangles do not cause problems to connect the fence modules to each other.

These fences can also be used as windshields and/or sound barriersand/or ballistic barriers and can thus can also be placed next toairports, roads, industrial sites, public buildings etc.

In a preferred embodiment is, viewed along the connecting rod in aconnected state, the sum of both the dimensions of the passages smallerthan the corresponding dimension of the connecting rod such that thefence modules can occupy in a connected state different positions withregard to each other having different distances between the passages. Toconnect the fence modules to each other, thus to place the connectingrod into the said passages, the connecting rod is placed along adirection of movement into said passages. Preferably the wording viewedalong the connecting rod corresponds to the wording viewed along thesaid direction of movement. Because the said dimension of the connectingrod is larger than the sum of both the dimensions of the passages, thismeans that the connecting rod can extend throughout both the entirepassages, while there is some distance between said passages, meaningthat the connection between the fence modules is good even when thepassages are spaced somewhat away from each other.

Preferably the connecting rod is an elongated rod, the first and thesecond passage can be brought into alignment according to a firstdirection, and the connecting rod extends through both said passagesalong substantially said first direction in a connected state. The rodhere has a lengthwise direction. Since the said passages can be broughtinto alignment and thus extend along one direction, here the firstdirection, an elongated rod can be easily placed trough said alignedpassages to connect the passages to each other. Preferably said passagesare also elongated, wherein their lengthwise direction preferablycorresponds to the said first direction in a connected state of thefence modules. The connecting rod then extends over a sufficient lengthinto said passages and such ensures a strong connection between thefence modules. Here preferably, the sum of both the lengths of thepassages is smaller than the length of the connecting rod. Said firstdirection is preferably an upright direction. Even more preferably thesaid first direction is approximately the height direction of a saidfence module.

In a very preferred embodiment the first fence module and the secondfence module are rotatable with regard to each other along theconnecting rod in a connected state. This means that angles between thefence modules, viewed along the length of the fence, are possible. Asaid angle lies preferably between 0° and 45°. A fence module which isplaced upon a flat surface normally has a height direction perpendicularto said surface, a length direction and a width direction, wherein thefence modules are situated next to each other as such that the lengthsof two consecutive fence modules determine the length of the fence. Hereone does not have to provide in adapted fence modules, such as cornerfence modules, to form angles.

Further preferably, when the connecting rod is an elongated rod asdescribed above, the first fence module and the second fence module arerotatable with regard to each other along the said first direction.

Also further preferably the connecting rod has a tubular shape and thesecond passage has a tubular shape. Herewith it is very easy to form thedesired angle between the fence modules. The diameter of the passages ispreferably somewhat larger than the diameter of the tubular connectingrod such that the fence modules can easily rotate with regard to eachother.

In a preferred embodiment the first module comprises a third connectingelement with an upright passage wherein the passage of the thirdconnecting element extends at a distance from the passage of the firstconnecting element and wherein, in a connected state, the passage of thesecond connecting element extends between the passages of the first andthe third connecting element and the connecting rod extends through thesaid three passages, and in that viewed along the connecting rod thedimension of the second connecting element, is smaller than thedimension of the space between the first and the third connectingelement, such that the passage of the second connecting element canoccupy different positions along the connecting rod within said space,such that in a connected state the fence modules can occupy differentpositions with regard to each other. Here there is a third passage andthe second connecting element extends between the first and thirdconnecting element, such that a strong connection is obtained when theconnecting rod extends through all said three passages. The position ofthe second connecting element between the third and first connecting isin function of the surface on which the fence modules are placed.

Further preferably the passages of the first and the third connectingelement are aligned. The connecting rod is than preferably an elongatedrod, and preferably the first and the second passage can be brought intoalignment according to a first direction, such that the connecting rodextends through all said passages along substantially said firstdirection in a connected state. Also further preferably the dimension ofthe second connecting element along the said first direction, when thepassages are aligned, is smaller than the corresponding dimension of thespace between the first and the second element, such that the passage ofthe second connecting element is movable according to said firstdirection.

The first and the third connecting element preferably form protrusionsof the first fence module such that a groove extends between said firstand third connecting element and also then preferably the secondconnecting element forms a protrusion of the second fence module whereinsaid second connecting element extends substantially within said groovein a connected state. Such a shape of the connecting elements is capableof withstanding impact forces of a vehicle, when a connecting rod isplaced in the said passages.

Further preferably the section of the groove according to the plane inwhich the first direction and the lengthwise direction of the said fencemodule extends, has the shape of an isosceles trapezoid and the secondconnecting element according to the plane in which the first directionand the lengthwise direction of the said fence module extends also hasthe shape of an isosceles trapezoid. A fence module which is placed upona flat surface normally has a height direction perpendicular to saidsurface, a length direction and a width direction, wherein the fencemodules are situated next to each other as such that the lengths of twoconsecutive fence modules lie in line with each other and determine thelength of the fence. The smallest parallel side of the said trapezoid ofthe second connecting element then preferably forms an outer edge of thesecond connecting element, the smallest parallel side of the saidtrapezoid of the groove then forms an edge of the fence module and thesaid trapezoid of the second connecting element is smaller than the saidtrapezoid of the groove. Here the second connecting element can easilytake different positions along the connecting rod in a connected state.

In very preferred embodiment the second fence module also comprises asaid first connecting element and the first fence module also comprisesa said second connecting element, wherein said first and secondconnecting element of each fence module are located at opposite sides ofthe fence module. Each fence module then comprises a first and a secondconnecting element such that they can be connected to another fencemodule at the height of both of the said sides. If the fence comprisesmore than two consecutive fence modules, preferably all the fencemodules or at least the fence modules which or not located at the edgesof the fence are constructed according to this very preferredembodiment. This makes it easy to construct a fence of the desiredlength. Preferably each fence module has a height direction, a lengthdirection and a width direction, wherein the fence modules are situatednext to each other as such that the lengths of two consecutive fencemodules determine the length of the fence. Preferably the first and thesecond connecting element are located at opposite sides according to thelength direction such that two fence modules can easily be connected toeach other to form a fence with a certain length.

Preferably at least one fence module comprises a panel which issupported on the base and which extends upright, the base comprises thesaid connecting element, and wherein said connecting element is locatedon a side of the base at the height of a side of the panel according tothe lengthwise direction of the panel. The base here supports the panel.The panel can be a wire panel with for example galvanized steel wires orthe panel can be a plastic panel (for example polycarbonate) or thepanel can be a ballistic panel according to the standardUL752/NIJ0101.06.

Further preferably if the fence module comprises a first connectingelement and a second connecting element, wherein said first and secondconnecting elements are located at opposite sides of the fence module,the panel substantially extends between said first and second connectingelement of the fence module, viewed along the lengthwise direction ofthe panel.

In a preferred embodiment, the base comprises a frame and outer platesconnected to said frame, wherein said frame and outer plates form thesaid receptacle and the outer plates form the edges of the receptacle.The frame ensures that the base has sufficient strength and is capableof withstanding impact forces caused by, for example, vehicles. Theplates form the casing into which the substance such as concrete,gravel, sand, water, can be placed. Water can be placed into thereceptacle with the aid of bags or other elements filled with water.Preferably one or several of the outer plates can be easily removed fromthe frame and/or the other plates and then can be reconnected, such thatthe receptacle can be easily filled with the said substance.

Further, the frame preferably comprises several reinforcement beamswhich are interconnected to each other. Further preferably these beamsare made of metal such as galvanized steel.

Even more preferably the frame further comprises several hollow elementswhich form the said passages, wherein each said hollow element at leastextends partly within a said reinforcement beam. The passages here arefirmly supported, such that the connection between two consecutive fencemodules is strong.

An outer plate preferably forms a front plate of the receptacle, and theframe preferably comprises at least three of said reinforcement beamswhich are respectively connected to and lie against, according to thelengthwise direction of the fence module and at a distance from eachother, the top of the front plate, the central part of the front plateaccording to the height direction and the bottom of the front plate,wherein each hollow element extends within a said respectivereinforcement beam, such that part of each reinforcement beams formspart of a said respective connecting element. This is a very strongembodiment. When a panel is present, the panel is preferably attachedupon the upper reinforcement beam of said three reinforcement beams.

The base is preferably provided with openings at the bottom, provided tobe engaged with by forks of a forklift truck in order to lift up thisfence module. In this way, the fence modules can be easily placed whenneeded.

In a preferred embodiment, the base comprises a front side and a backside and the base has a certain depth between said front side and backside, the passages are located at the height of the front side and themaximal length dimensions of the base decreases from the passages on tothe back side. In this way, the fence modules can be connected to eachother such that the length directions of the fence modules form anangle.

Preferably the base comprises at the height of its bottom an anti-sliplayer. When a vehicle crashes into the fence, this anti-slip layer helpspreventing the sliding of a said fence module, such that the fencehardly moves when being hit by a vehicle. With the aid of said anti-sliplayer the fence modules can also be placed upon slippery surfaces. Thisanti-slip layer can be for example a rubber layer.

The present invention is now explained in greater detail below withreference to the following detailed description of some preferredembodiments of a fence according to the present invention. The aim ofthis description is solely to give illustrative examples and indicatefurther advantages and particularities and thus cannot be interpreted asa limitation of the field of application of the invention or of thepatent rights claimed in the claims.

In this detailed description, reference is made by means of referencenumerals to the appended drawings, wherein

FIG. 1 is a front view of a fence module according to a first embodimentof the invention;

FIG. 2 is a perspective view of the fence module of FIG. 1;

FIG. 3 is a rear view of the fence module of FIGS. 1 and 2;

FIG. 4 is another perspective view of the fence module of FIGS. 1 to 3;

FIG. 5 is a front view of a fence according to the invention comprisingtwo fence modules a shown in FIGS. 1 to 4;

FIG. 6 is a perspective view of the fence as shown in FIG. 5;

FIG. 7 is a back view of the fence as shown in FIGS. 5 and 6;

FIG. 8 is another perspective view of the fence as shown in FIGS. 5 to7;

FIG. 9 is a perspective view of the frame and part of the outer platesof the base of the fence module as shown in FIGS. 1 to 4;

FIG. 10 is another perspective view of the frame and part of the outerplates as shown in FIG. 9;

FIG. 11 is a back view of a fence module according to a secondembodiment of the invention;

FIG. 12 is a perspective view of a fence comprising two fence modules asshown in FIG. 11

The fence, as shown in the figures, comprises a first and a second fencemodule (1) which are consecutive connectable to each other. Each fencemodule (1) has a similar design and comprise a base (2) with areceptacle, wherein said receptacle is filled with concrete, andcomprises a panel (7) which is supported by the base (2).

The fence module (1) has a height direction (A) which extends accordingto the vertical direction when placed upon a horizontal flat surface, alength direction (B) and a width direction (C). The fence modules (1)are situated next to each other as such that the lengths of twoconsecutive fence modules (1) lie in line with each other and determinethe length of the fence. Each fence module (1) has a height ofapproximately 2.5 m, a length of approximately 2.6 m and a depth ofapproximately 0.7 m.

The base (2) of the fence module (1) has a first connecting element (3a), a second connecting element (3 b) and a third connecting element (3c). The first and the third connecting elements (3 a, 3 c) are locatedon one side of the base (2) according to the lengthwise direction of thefence module (1) and the second connecting element (3 b) is located onsaid other side of the base (2). Each connecting element (3 a, 3 b, 3 c)forms a protrusion of the base (2) according to said lengthwisedirection. Each connecting element (3 a, 3 b, 3 c) comprises anelongated passage (4 a, 4 b, 4 c) which extends according to the heightdirection (A).

The first and the third connecting element (3 a, 3 c) are located at adistance from each other such that a groove (6) extends between saidfirst and third connecting element (3 a, 3 c). This groove (6) has,according to the plane in which the height direction (A) and thelengthwise direction (B) of the fence module (1) extends, the shape ofan isosceles trapezoid, wherein the smallest of the parallel sides formsan edge of the base (2). The second connecting element (3 b) accordingto the plane in which the height direction (A) and the lengthwisedirection (B) of the fence module (1) extends, also has the shape of anisosceles trapezoid, with the smallest of the parallel sides forming anedge of the base (2).

To connect the fence modules (1) to each other, the second connectingelement (3 b) of a said fence module (1) is placed in the groove (6)between the first and third connecting element (3 a, 3 c) of anotherfence module (1) in such a manner that the passages (4 a, 4 b, 4 c) ofsaid first, second and third connecting element (3 a, 3 b, 3 c) aresubstantially aligned and a tubular elongated connecting rod (5) can beplaced into said three passages (4 a, 4 b, 4 c) to connect the fencemodules (1) to each other. The second connecting element (3 b) issmaller than the said groove (6) such that it can occupy differentpositions in the groove (6) in function of the surface upon which thefence modules (1) are placed. The diameter of the elongated rod (5) isapproximately 40 mm and the said passages (4 a, 4 b, 4 c) also have atubular shape with a diameter which is slightly larger than the diameterof the elongated rod (5).

Further the base (2) comprises a front side and a back side, accordingto the depth direction (C) and the base (2) has a certain depth betweensaid front side and back side, the connecting elements (3 a, 3 b, 3 c)are located at the height of the front side and the maximal lengthdimensions of the base (2) decreases from the connecting elements (3 a,3 b, 3 c) on to the back side. This ensures that the connected fencemodules (1) can pivot backwords along the height direction (A). Thisensures that angles are possible between the connected fence modules(1).

The base (2) further comprises a frame and plates (9 a, 9 b) which formthe receptacle, wherein said plates (9 a, 9 b) are attached to the frameand form the edges of the base (2). The plates (9 a, 9 b) comprises afront plate (9 a) which extends according to the height direction (A)and the length direction (B), side plates, back plates which form theback side, a top plate and a bottom plate (9 b) which is provided torest upon the surface upon which the fence is placed. In the secondembodiment according to the invention, as shown in FIGS. 11 and 12, thetop plate is removable connected to the rest of the base (2) with theaid of bolts. By removing the top plate, one can easily fill up thereceptacle with concrete. After the receptacle is filled up, the topplate is reattached.

The frame comprises three hollow reinforcement beams (8 a) which arerespectively connected, according to the lengthwise direction of thefence module (1) and at a distance from each other, to the top of thefront plate (9 a), the central part of the front plate (9 a) accordingto the height direction (A) and the bottom of the front plate (9 a). Theframe further comprises three hollow tubes (10) which form the saidpassages (4 a, 4 b, 4 c), wherein each tube (10) extends within a saidrespective reinforcement beam (8 a), such that part of eachreinforcement beams (8 a) forms part of a said respective connectingelement (3 a, 3 b, 3 c). The frame also comprises three upright hollowreinforcement beams (8 b) which extend according to the height directionand lie against the said three reinforcement beams (8 a) of the frontplate (9 a). The frame also comprises two hollow reinforcement beams (8d) which are attached to the bottom plate (9 b) and extend according tothe depth direction (C) and which form openings (11) into which theforks of the forklifts can engage to pick up the fence module (1). Atlast the frame comprises hollow reinforcement beams (8 c) which connectthe reinforcement beams (8 d) of the bottom plate (9 b) at the height ofthe said opening (11), to the upper reinforcement beam (8 a) of thefront plate (9 a). The frame here then has a triangular shape, such thatthe frame provides sufficient strength to the base (2).

A fence made of these fence modules (1), can stop moving vehicles whichweigh up to 7.2 ton and which move at a speed of maximum 80 km/h withinone meter. Such fences can be used for the protection of people againstterrorist, but can also be used as windshields and/or sound screens nextto for example air ports and roads.

1. A fence comprising at least a first and a second fence module whichare consecutive connectable to each other, wherein said fence modulescomprise a base with a receptacle for a substance such as concrete,gravel, water or sand, wherein the first fence module comprises a firstconnecting element with an upright passage, the second fence modulecomprises a second connecting element with an upright passage, and thefence comprises a connecting rod for extending through both saidpassages to connect the fence modules to each other, and wherein in aconnected state of the fence modules, these fence modules can occupy atleast two positions with regard to each other, being a first positionwhere the distance between the said passages along the connecting rod isminimal and a second position where the distance between the saidpassages along the connecting rod is maximal.
 2. The fence according toclaim 1, wherein the base of each fence module comprises the respectiveconnecting element.
 3. The fence according to claim 1, wherein, viewedalong the connecting rod in a connected state, the sum of both thedimensions of the passages is smaller than the corresponding dimensionof the connecting rod such that the fence modules can occupy in aconnected state different positions with regard to each other havingdifferent distances between the passages.
 4. The fence according toclaim 1, wherein the connecting rod is an elongated rod and wherein thefirst and the second passage can be brought into alignment according toa first direction, and wherein the connecting rod extends through bothsaid passages along substantially said first direction in a connectedstate.
 5. The fence according to claim 1, wherein in a connected state,the first fence module and the second fence module are rotatable withregard to each other along the connecting rod.
 6. The fence according toclaim 4, wherein in a connected state, the first fence module and thesecond fence module are rotatable with regard to each other along thesaid first direction.
 7. The fence according to claim 5, wherein theconnecting rod has a tubular shape and the first and the second passagehave a tubular shape.
 8. The fence according to claim 1, wherein thefirst module comprises a third connecting element with an uprightpassage wherein the passage of the third connecting element extends at adistance from the passage of the first connecting element and wherein,in a connected state, the passage of the second connecting elementextends between the passages of the first and the third connectingelement and the connecting rod extends through the three said passages,and wherein, viewed along the connecting rod the dimension of the secondconnecting element, is smaller than the dimension of the space betweenthe first and the third connecting element, such that the passage of thesecond connecting element can occupy different positions along theconnecting rod within said space, such that in a connected state thefence modules can occupy different positions with regard to each other.9. The fence according to claim 8, wherein the passages of the first andthe third connecting element are aligned.
 10. The fence according toclaim 8, wherein the first and the third connecting element formprotrusions of the first fence module such that a groove extends betweensaid first and third connecting element and wherein in that the secondconnecting element forms a protrusion of the second fence module whereinsaid second connecting element extends substantially within said groovein a connected state.
 11. The fence according to claim 10, wherein thesection of the groove according to the plane in which the firstdirection and the lengthwise direction of the said fence module extends,has the shape of an isosceles trapezoid and wherein the secondconnecting element according to the plane in which the first directionand the lengthwise direction of the said fence module extends, also hasthe shape of an isosceles trapezoid.
 12. The fence according to claim 1,wherein the base comprises a frame and outer plates connected to saidframe, wherein said frame and outer plates form the said receptacle andthe outer plates form the edges of the receptacle.
 13. The fenceaccording to claim 12, wherein the frame comprises several reinforcementbeams which are interconnected to each other.
 14. The fence according toclaim 13, wherein the frame comprises several hollow elements which formthe said passages, wherein each said hollow element at least extendspartly within a said reinforcement beam.
 15. The fence according toclaim 8, wherein an outer plate forms the front plate, and the framecomprises at least three of said reinforcement beams which arerespectively connected to and lie against, according to the lengthwisedirection of the fence module and at a distance from each other, the topof the front plate, the central part of the front plate according to theheight direction and the bottom of the front plate, wherein each hollowelement extends within a said respective reinforcement beam, such thatpart of each said reinforcement beam forms part of a said respectiveconnecting element.
 16. The fence according to claim 1, wherein thesecond fence module also comprises a said first connecting element andthe first fence module also comprises a said second connecting element,wherein said first and second connecting element of each fence moduleare located at opposite sides of the fence module.
 17. The fenceaccording to claim 1, wherein at least one fence module comprises apanel which is supported on the base and which extends upright and inwhich the base comprises the said connecting element, wherein saidconnecting element is located on a side of the base at the height of aside of the panel according to the lengthwise direction of the panel.18. The fence according to claim 16, wherein the panel substantiallyextends between said first and second connecting element of the fencemodule, viewed along the lengthwise direction of the panel.
 19. Thefence according to claim 1, wherein the base comprises a front side anda back side and the base has a certain depth between said front side andback side, the passages are located at the height of the front side andwherein the maximal length dimensions of the base decreases from thepassages on to the back side.
 20. The fence according to claim 1,wherein the base comprises at the height of its bottom an anti-sliplayer.